Semi-trucks with a gross vehicle weight rating (GVWR) over 33,000 pounds are classified as class 8 vehicles by the Federal Highway Administration. The term semi-truck actually refers to the trailer, ...

MIDLAND, Texas — When you're out cruising on the interstate, you might one day look over and see a semi-truck driving with no one behind the wheel. But don't worry, it's actually being driven by ...

The first ten wheels belong to the tractor. It tows a semi trailer, which usually rides on two rear axles. Those axles also carry four tires each. Add those eight to the tractor’s ten, and you get 18 ...

CHANDLER, Ariz. — 12 News is getting an exclusive look at Waymo's self-driving semi-trucks. The trucks have been on the road for a while, but Waymo has never given a media outlet a closer look at them ...